It is a rather different process for OAuth2 on 365 vs. classic Exchange, but Microsoft do lump macOS native apps into a so-called "Apple Internet Accounts" profile, which is a bit of a dark art to properly activate.
Thanks, all. Mark.
It is a rather different process for OAuth2 on 365 vs. classic Exchange, but Microsoft do lump macOS native apps into a so-called "Apple Internet Accounts" profile, which is a bit of a dark art to properly activate.
Thanks, all. Mark.